Carbureter



UNITED STATES DONALD R. WILLS, OF WASHINGTON COURT-HOUSE,

OHIO, ASSIGNOR OF ONE-HALF TO ADOLPI-I KLEIN, 0F CINCINNATI, OHIO.

CABBURETER.

Application filed August 12, 1915.

To all whom t may concern:

Bc it known that I, DONALD R. WiLLs, a citizen of the United States, residing at iashington Court-House, in the county of Fayette and State of Ohio, have invented Certain new and useful Iniprovements in Carbureters, of which the following is a specification.

My invention relates to carbureters used in connection with explosive motors, and has for its object the provision of novel means whereby the feeding of fuel and air are automatically controlled by novel means for regulating the relative inflow of fuel and air according to the speed of intake of the mixed fuel into the motor, and further to provide novel means whereby the intake of fuel may be regulated by the operator of the machine during its operation and auX- iliary to the automatic control, so that the correct mixture of fuel and air may be obtained as desired, according to the conditions under which the motor is ruiming.

The invention Will be further readily understood from the following description and claims, and from the drawing. in which latter:

Figure 1 is a central axial section of my improved device, taken on the line 1&1 of Fig. 3.

Fig. 2 is a side elevation of my improved device.

Fig. 3 is a plan view of the same.

Fig. 4 is a cross-sectional detail, taken on the line 4-4 of Fig. 1.

Fig. 5 is a cross-sectiona1 detail, taken on the line 5 5 of Fig. 1.

11 represents the casing, and 12 the fuelreservoir. The upper end of the latter is seated in an annular seat, 13, of the casing, and is held toward said scat by a thiinble, 14, which serves as a bolt having threaded connection 15 with the wall of the primary mixture passage 16, a compressible Washer 17 being located between the head 18 of the thimble and an opposing seat 19 at the lower end of the fuel-reservoir.

21 represents a primary air-inlet passage, instanced as located in the thimble 14. A fuel-valve 22 is located in the primary airinlet adjacent to the constricted portion 23 of the passage. for directing the air received through the primary air-inlet past the fuelvalve in order to draw the fuel, such as gaso- Specication of Letters Patent.

Patented Apr. 23, 1918. Serial No. 45,113.

lene, through said valve, whereby a primary fuel-mixture is provided. This primary fuehmixture is arranged to pass through the primary n'nixture passage 16, and thence through the outlet or suctionpassage 24, which con'uminicates with thel manifold or other fuel-mixture intake of the explosive motor to which the carbureter is connected, for instance, the internal com` bustion motor of an automobile.

A throttle-valve 25, is located in the suction-passage 24 and has suitable connection with an ordinary throttle-lever, instanced at 26. The throttle-lever may coact with a gage 27. The throttle-lever is suitably connected with the throttle-valve, as by being articulated at :28 to a rod 29, which is articulated at 30 with an arm 31, rigidly secured to the rock-shaft 32 of the throttle-valve.

The fuel-valve in the present exemplification comprises a tube 3G, in which there is u valve-seat tube 37, provided with a valvestat 3S. with which the valve 22 coacts. The tube 36 connectie with the oil-reservoir b v means of ducts 40, forming a bridge- 'piece surrounded by the primary air-inlet passage. The ducts 40 connect with a cavity 11. The valve-seat tube 37 extends through said cavity and the tube 36 and has a fuelpassage 4Q therein which communicates with the ducts 4() by means of a passage or passages 43 through the wall of said tube.

An internally and externally threaded nut 45 is received in the threaded opening 46 in the lower extension 47 of the thimble, and forms close union between said nut and lower extension for preventing the leakage of fuel past the nut. The valve-seat tube is extended as a bolt having threaded con# nection 49 with the externally and internally threaded nut 45. A gasket-packing 50 is secured between the lovver threaded end 5l of the nut 45 and the shank of the valve-seni` tube, for preventing leakage of fuel between the latter and said nut 45.

The valve-seat tube is under manual control of the operator of the motor or machine during operation, for accomplishing which, in the present exempliiication, au arm 54 is rigidly secured to the lower end of the valve-seat tube, accomplished in the present instance by the threaded connection 55 between said arm and the lower threaded end 56 of the valve-seat tube and a nut 5T,

lOO

forming a lock-nut between said arm and valve-seat tube.

The arm 5l is connected with a suitable lever, for instance a hand-operated lever 58, located in suitable convenient location at the operator`s position, so that the truelvalve-seat may be readilyT operated by the operator during running ot the machine.

This is instanced as accomplished by means ot a rod .39, articulated b v articulal tion with tlie arm nl, and connected With the lever by articulation 61, the lever being pivoted on a pivot 62 and coaeting With a gage 63, tor gaging the extent of the move-- ment ot' the manuallvr movable member ot the fuel-valve, in either direction. when this is desired.

The movement ot' the arm 5ft in one direction will cause a movement ot' the valve seat 38 toivard its courting valve vtor diminisliingV the feeding of t'uel to the mixing-passage, and empl '\yed for instance when a poorer mixture, that is to say, a mixture less rich in gasolene, is momentarily or otherwise desired during the running of the machine.

W'heu the arm 54 is moved in the opposite direction, the valve-seat 38 is moved avv-rfv7 from the enacting valve 22 for 'feeding a richer mixture to the mixing passage, that is to say, a mixture richer in gasolene, when such mixture is desired during the running of the machine in order to provide the cor* rect mixture for the running conditions. These movements of the valve-member are accomplished to the desired extent for regulating by diminution or addition to the fuel of the mixture passing to the engine, irre spcctive of the momentarily enacting position of the valve.

T he valve 22 is on a valve-ste1n 64, provided ivith a head 65, movable in a recess ('36. the valve being guided by the Wall of the recess and a bearing 67. A spring 68 is located in the recess S6 between the bottom ol' said recess and the head 65, for raising the valve-stem so that its head will coact with a heel 69 ot a lever T0 pivoted by bearings 71 on a pin 7'2 located in a bearing 73 of the casing.

'An automatic air-intake regulator 75 is located in an auxiliarvv air-intake passage T6, having a converging Wall 77, converging at an angle to the line of movement of the automatic airintake regulator, so as to increase the area ot air-opening as the regu lator is depressed by the suction of the motor. The inclination of the wall may be changed to suit the effective power or suction capacit)r of the motor. I prefer to accomplish this variation or adjustment by providing interchangeable v valls for the auxiliar)v air-intake passage. One of these in terchangeable Walls is shown at 77 which li as threaded connection 78 with the outer Wall T9. which latter is instaneed as forming the support t'or the interchangeable Wall. A ivall having a different inclination is indicated in dotted lines as T7 and another at 77h as in Fig. 1.

The passage 7G communicates by a passage 80 with the primary mixture-passage 1G, passing the same and augmenting the aircontents ot' the fuel-mixture passing to the throttle-valve.

The automatic air-intake regulator 75 is shown in the torm of a disk, and is provided with a sleeve S1, which has bearing about a post 82. rigidlv secured to the casing, as b v thc threaded connection 83 and lock-nut 8l.

To prevent turninor of the regulator and the parts mounted Jthereon, it is provided with a` pin S7 onl a screw S8, the pin extensh ing into a slot 89, extending lengthwise oi' the post. A spring 91 surrounding the post and located between the bottom of the easing and the regulator T5, normally maintains the regulator in raised position, the limit ot rising movement of the regulator being instanced as determined by the pin 87 striking the upper vwall of the slot 89.

A guide 95 is pivoted on a lug 96 of the regulator T5 by means of a pin 97, extend ing through said lug and lugs 18 on the guide. A spring 99 located about a boss 100 on the regulator and the heel 101 of the guide 95, urges inclination of said guide toward the post 82. A screw 105 is threaded in a. threaded lug 1(16 upon the sleeve 81, and has a notched head 107. the notches 108 o which eoact with a knob 109 on the guide for holding the screw in adjusted positions, the position ot the screw determining the in elination ot' the guide with relation to the line of movement of the regulator- 75.

A shoe. 110 on the lever 70 rides on the guiding face otx the guide 95, for controlling the position ot the valve 22 according to the positions assumed b v the automatic air-intake regulator 75. It the guiding 'tace oi' the guide. 95 is parallel With the line et movement of the regulator 75, there will be no eti'ect on the position of the valve 22 dur inl;l movement ot the regulator T5. lt, however, the movable end of the guide is inclined toward the axis of the regulator 75, as instanced in Fig. 1 of" the drawing, by the positioning of the screw 105, then the farther the regulator 75 is drawn inuardljP by the suction of the engine, the greater will be the extent to which the valve 22 is moved away from the valve-seat 38 b v the action of the spring 65.

The quickly repeated suction-intakes by the engine result in pulsations of the regir later. The regulator 75 is throughout its movements spaced from its coacting converging wall 77 so that air may at all times pass said regulator to the engine even at highest engine speeds, and so that said regulator mai1 constitute a floating member at said ltltl ll Vl l) automatic air-intake, the air-intake space increasin gradually with the extent of movement 0I the regulator.

111 is a cap, having a cavity 112 therein, which acts as a buffer on depression of the regulator 75. To supplement this buffer I provide a piston 113 in a cylinder 114 in the post 82, the cylinder being shown closed by a threaded cap 115. A rod 116 extends through a passage 11T in the post and has relcasable connection at its upper end with the cap, as by being provided with a collar 118, the threaded end 119 of the rod passing through a hole in the cap 111, a nut 120 holdin the rod in place. A heavy oil ills the cylinder 114, there being slight space between the piston and the wall of the cylinder to permit the movement of the piston lengthwise on the cylinder but retard said movement for cushioning the regulator 7 5.

The fuel in the fuehrescri oir 12 is replenished from a suitable passage 121, in which there is a Valve-seat 125, with which a iioatvalve 126 coacts.

The float-valve is controlled by a {ioatlever 19,7 pivoted at 128, and provided with a float 129.

By means of my improved device the richness ot' the Jfuel-mixture is under continual manual control of the operator during the operation of the machine regardless of the position of the regulator 75 and irrespective of the position of the automatically movable member of the fuel-valve. The term manual is employed as including control by the hand, foot or other human control.

By means of my improved device further, the operator may durin running of the machine temporarily supp y a greater ratio of gasolene, as when running with a cold motor, or may temporarily supply a richer or leaner fuel-mixture if `he finds this desirable for any reason at any given speed.

My improved device further provides an extremely delicate adjustment for obtaining correct fuel-mixtures at great variations of motor-speed. F or instance, the adjustment of the guide and consequent adjustment of the fuel-valve, is especiaily serviceable for obtaining the correct fuel-mixtures for high motor-speeds, during which eX- treme movemcntsbf the regulator 75 takes place, while the adjustment of the valveseat provides a delicate adjustment for obtaining correct fuel-mixtures for comparatively low speeds, the two adjustments combined providing delicately adjusted graduations of fuel-supply for all speeds.

It is of course obvious that changes may be-made in the details shown and described inthe present exempliication of my improved device Without departing from the spirit of my invention.

That I claim as new and desire to secure by Letters Patent is:

1. In a carbureter, the combination of a fuel-valve, a primary air-intake passage coacting therewith, an automatic air-intake regulator, a guide, a fixed pivot connecting one of the ends of said guide to said regulater, an adjusting screw adjustable on said regulator, said adjusting screw and the other end of said guide provided with coacting positioning parts for holding said screw in adjusted positions and `for locating said guide, a spring acting on said guide for causing coaction of said positiomng parts and maintenance of adjusted position of said guide, a lever having a part coacting with said guide and a part coacting with said fuel-valve and constructed and arranged for automatically regulating said fuel-valve according to the automatic movements of said automatic air-intake regulator.

Q. In a carbureter, the combination of a fuel-valve, a primary air-intake passage coacting therewith, an automatic air-intake regulator, a lever actuating said valve, a guide having lengthwise movement arranged to actuate said lever, said guide pivoted to said regulator, an adjusting screw on said regulator having a head provided with positioning parts, said guide having a positioning part thereon coacting with said firstnamed positioning parts for positioning the inclination of said guide with relation to the line of movement of said regulator and for locking said adjusting screw, and resilient means for causing coaction of said positioning parts.

In testimony whereof, I have signed my name hereto in the presence of the two subscribing witnesses.

DONALD R. WILLS.

Titnesses A. B. ARs'rrNcs'rALL, CONSTANT SoU'rHWoR'ri-i.

copies of this patent may be obtained for ve cents each, by addressing the "Commissioner of Patents,

Washington, I). G. 

